./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:24:42,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:24:42,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:24:42,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:24:42,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:24:42,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:24:43,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:24:43,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:24:43,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:24:43,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:24:43,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:24:43,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:24:43,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:24:43,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:24:43,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:24:43,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:24:43,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:24:43,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:24:43,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:24:43,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:24:43,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:24:43,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:24:43,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:24:43,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:24:43,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:24:43,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:24:43,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:24:43,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:24:43,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:24:43,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:24:43,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:24:43,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:24:43,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:24:43,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:24:43,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:24:43,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:24:43,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:24:43,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:24:43,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:24:43,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:24:43,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:24:43,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:24:43,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:24:43,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:24:43,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:24:43,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:24:43,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:24:43,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:24:43,121 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:24:43,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:24:43,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:24:43,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:24:43,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:24:43,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:24:43,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:24:43,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:24:43,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:24:43,124 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:24:43,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:24:43,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:24:43,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:24:43,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:24:43,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:24:43,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:24:43,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:24:43,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:24:43,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:24:43,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:24:43,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:24:43,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:24:43,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:24:43,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:24:43,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:24:43,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:24:43,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 [2021-10-21 20:24:43,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:24:43,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:24:43,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:24:43,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:24:43,427 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:24:43,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2021-10-21 20:24:43,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/data/1ee215663/16cb08256e5c4bc9b69d9d9b01ee4595/FLAG9293650a7 [2021-10-21 20:24:44,094 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:24:44,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2021-10-21 20:24:44,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/data/1ee215663/16cb08256e5c4bc9b69d9d9b01ee4595/FLAG9293650a7 [2021-10-21 20:24:44,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/data/1ee215663/16cb08256e5c4bc9b69d9d9b01ee4595 [2021-10-21 20:24:44,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:24:44,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:24:44,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:24:44,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:24:44,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:24:44,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65291484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44, skipping insertion in model container [2021-10-21 20:24:44,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:24:44,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:24:44,702 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2021-10-21 20:24:44,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:24:44,734 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:24:44,750 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2021-10-21 20:24:44,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:24:44,779 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:24:44,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44 WrapperNode [2021-10-21 20:24:44,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:24:44,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:24:44,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:24:44,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:24:44,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:24:44,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:24:44,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:24:44,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:24:44,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:24:44,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:24:44,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:24:44,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:24:44,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (1/1) ... [2021-10-21 20:24:44,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:24:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:44,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:24:44,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:24:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:24:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:24:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:24:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:24:45,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:24:45,297 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-21 20:24:45,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:24:45 BoogieIcfgContainer [2021-10-21 20:24:45,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:24:45,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:24:45,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:24:45,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:24:45,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:24:44" (1/3) ... [2021-10-21 20:24:45,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5b6530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:24:45, skipping insertion in model container [2021-10-21 20:24:45,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:24:44" (2/3) ... [2021-10-21 20:24:45,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5b6530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:24:45, skipping insertion in model container [2021-10-21 20:24:45,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:24:45" (3/3) ... [2021-10-21 20:24:45,312 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound20.c [2021-10-21 20:24:45,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:24:45,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 20:24:45,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:24:45,387 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:24:45,388 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 20:24:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:24:45,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:45,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:45,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-10-21 20:24:45,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:45,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646815640] [2021-10-21 20:24:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:45,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:45,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:45,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646815640] [2021-10-21 20:24:45,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646815640] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:24:45,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:24:45,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:24:45,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509406064] [2021-10-21 20:24:45,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:24:45,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:24:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:24:45,653 INFO L87 Difference]: Start difference. First operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:45,674 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-10-21 20:24:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:24:45,676 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 20:24:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:45,685 INFO L225 Difference]: With dead ends: 85 [2021-10-21 20:24:45,686 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 20:24:45,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:24:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 20:24:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-21 20:24:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-21 20:24:45,728 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-10-21 20:24:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:45,728 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-21 20:24:45,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-10-21 20:24:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:24:45,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:45,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:45,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:24:45,731 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:45,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-10-21 20:24:45,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:45,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795236347] [2021-10-21 20:24:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:45,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:45,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:45,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557984246] [2021-10-21 20:24:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:45,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:45,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:45,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:45,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:24:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:45,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:24:45,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:46,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:46,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795236347] [2021-10-21 20:24:46,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:46,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557984246] [2021-10-21 20:24:46,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557984246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:24:46,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:24:46,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:24:46,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025844709] [2021-10-21 20:24:46,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:24:46,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:46,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:24:46,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:24:46,052 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:46,196 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-10-21 20:24:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:24:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 20:24:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:46,202 INFO L225 Difference]: With dead ends: 70 [2021-10-21 20:24:46,202 INFO L226 Difference]: Without dead ends: 66 [2021-10-21 20:24:46,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:24:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-21 20:24:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-10-21 20:24:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.297872340425532) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-10-21 20:24:46,232 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2021-10-21 20:24:46,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:46,232 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-10-21 20:24:46,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-10-21 20:24:46,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:24:46,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:46,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:46,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:46,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-21 20:24:46,461 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:46,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-10-21 20:24:46,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:46,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324928086] [2021-10-21 20:24:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:46,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:46,515 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:46,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430295197] [2021-10-21 20:24:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:46,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:46,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:46,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:46,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:24:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:46,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:24:46,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:47,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:47,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324928086] [2021-10-21 20:24:47,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:47,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430295197] [2021-10-21 20:24:47,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430295197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:24:47,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:24:47,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:24:47,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058893999] [2021-10-21 20:24:47,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:24:47,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:47,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:24:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:24:47,092 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:47,394 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-10-21 20:24:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:24:47,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 20:24:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:47,398 INFO L225 Difference]: With dead ends: 66 [2021-10-21 20:24:47,399 INFO L226 Difference]: Without dead ends: 64 [2021-10-21 20:24:47,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 227.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:24:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-21 20:24:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-10-21 20:24:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-10-21 20:24:47,414 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 15 [2021-10-21 20:24:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:47,414 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-10-21 20:24:47,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-10-21 20:24:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:24:47,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:47,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:47,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:47,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:47,616 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:47,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-10-21 20:24:47,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:47,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049175261] [2021-10-21 20:24:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:47,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:47,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:47,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274631855] [2021-10-21 20:24:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:47,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:47,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:47,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:24:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:47,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:24:47,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:48,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:48,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049175261] [2021-10-21 20:24:48,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:48,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274631855] [2021-10-21 20:24:48,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274631855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:24:48,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:24:48,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:24:48,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332105378] [2021-10-21 20:24:48,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:24:48,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:48,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:24:48,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:24:48,085 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:48,308 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-10-21 20:24:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:24:48,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-21 20:24:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:48,310 INFO L225 Difference]: With dead ends: 100 [2021-10-21 20:24:48,311 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 20:24:48,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:24:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 20:24:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-10-21 20:24:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 79 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2021-10-21 20:24:48,325 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 17 [2021-10-21 20:24:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:48,326 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2021-10-21 20:24:48,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2021-10-21 20:24:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:24:48,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:48,327 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:48,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:48,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:48,541 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:48,542 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2021-10-21 20:24:48,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:48,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574851281] [2021-10-21 20:24:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:48,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:48,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:48,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275380858] [2021-10-21 20:24:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:48,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:48,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:48,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:48,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:24:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:48,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:24:48,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:48,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:48,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574851281] [2021-10-21 20:24:48,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:48,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275380858] [2021-10-21 20:24:48,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275380858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:24:48,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:24:48,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:24:48,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675538657] [2021-10-21 20:24:48,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:24:48,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:24:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:24:48,755 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:48,804 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-10-21 20:24:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:24:48,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:24:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:48,807 INFO L225 Difference]: With dead ends: 80 [2021-10-21 20:24:48,808 INFO L226 Difference]: Without dead ends: 78 [2021-10-21 20:24:48,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:24:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-21 20:24:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-21 20:24:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.25) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-10-21 20:24:48,821 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 20 [2021-10-21 20:24:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:48,821 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-10-21 20:24:48,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-10-21 20:24:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:24:48,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:48,823 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:48,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:49,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:49,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:49,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:49,046 INFO L82 PathProgramCache]: Analyzing trace with hash 598788611, now seen corresponding path program 1 times [2021-10-21 20:24:49,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:49,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098806522] [2021-10-21 20:24:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:49,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:49,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:49,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746805205] [2021-10-21 20:24:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:49,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:49,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:49,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:49,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:24:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:49,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:24:49,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:24:49,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:49,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098806522] [2021-10-21 20:24:49,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:49,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746805205] [2021-10-21 20:24:49,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746805205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:49,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:49,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-21 20:24:49,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517668150] [2021-10-21 20:24:49,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:24:49,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:49,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:24:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:24:49,449 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:49,541 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-10-21 20:24:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:24:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 20:24:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:49,543 INFO L225 Difference]: With dead ends: 86 [2021-10-21 20:24:49,546 INFO L226 Difference]: Without dead ends: 80 [2021-10-21 20:24:49,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:24:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-21 20:24:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-10-21 20:24:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-10-21 20:24:49,562 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2021-10-21 20:24:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:49,563 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-10-21 20:24:49,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-10-21 20:24:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:24:49,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:49,565 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:49,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:49,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 20:24:49,782 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:49,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2021-10-21 20:24:49,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:49,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138775656] [2021-10-21 20:24:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:49,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:49,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:49,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739638912] [2021-10-21 20:24:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:49,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:49,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:49,822 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:49,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:24:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:49,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:24:49,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:50,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:50,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138775656] [2021-10-21 20:24:50,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:50,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739638912] [2021-10-21 20:24:50,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739638912] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:24:50,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:24:50,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:24:50,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893557029] [2021-10-21 20:24:50,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:24:50,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:24:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:24:50,177 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:50,344 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-10-21 20:24:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:24:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 20:24:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:50,346 INFO L225 Difference]: With dead ends: 80 [2021-10-21 20:24:50,347 INFO L226 Difference]: Without dead ends: 72 [2021-10-21 20:24:50,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:24:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-21 20:24:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-10-21 20:24:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-10-21 20:24:50,359 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2021-10-21 20:24:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:50,360 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-10-21 20:24:50,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-10-21 20:24:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:24:50,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:50,362 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:50,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:50,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:50,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2021-10-21 20:24:50,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:50,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62365025] [2021-10-21 20:24:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:50,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:50,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:50,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96058953] [2021-10-21 20:24:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:50,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:50,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:50,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:50,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:24:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:50,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 20:24:50,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:51,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62365025] [2021-10-21 20:24:51,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96058953] [2021-10-21 20:24:51,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96058953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:51,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:51,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:24:51,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090662164] [2021-10-21 20:24:51,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:24:51,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:24:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:24:51,260 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:51,637 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-10-21 20:24:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:24:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-21 20:24:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:51,640 INFO L225 Difference]: With dead ends: 105 [2021-10-21 20:24:51,640 INFO L226 Difference]: Without dead ends: 103 [2021-10-21 20:24:51,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 225.3ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:24:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-21 20:24:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-10-21 20:24:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 73 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-10-21 20:24:51,671 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2021-10-21 20:24:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:51,671 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-10-21 20:24:51,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-10-21 20:24:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 20:24:51,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:51,675 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:51,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:51,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:51,897 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2021-10-21 20:24:51,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:51,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519284079] [2021-10-21 20:24:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:51,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:51,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:51,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78418038] [2021-10-21 20:24:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:51,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:51,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:51,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:24:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:52,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:24:52,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:52,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:52,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519284079] [2021-10-21 20:24:52,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:52,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78418038] [2021-10-21 20:24:52,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78418038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:52,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:52,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:24:52,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340586122] [2021-10-21 20:24:52,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:24:52,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:24:52,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:24:52,637 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:52,823 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-10-21 20:24:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:24:52,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-21 20:24:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:52,826 INFO L225 Difference]: With dead ends: 116 [2021-10-21 20:24:52,826 INFO L226 Difference]: Without dead ends: 104 [2021-10-21 20:24:52,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:24:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-21 20:24:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-10-21 20:24:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 95 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-10-21 20:24:52,854 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2021-10-21 20:24:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:52,855 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-10-21 20:24:52,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-10-21 20:24:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:24:52,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:52,864 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:52,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:53,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 20:24:53,073 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:53,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:53,074 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2021-10-21 20:24:53,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:53,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286119678] [2021-10-21 20:24:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:53,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:53,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:53,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788458478] [2021-10-21 20:24:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:53,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:53,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:53,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:53,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:24:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:53,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:24:53,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:53,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:53,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286119678] [2021-10-21 20:24:53,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:53,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788458478] [2021-10-21 20:24:53,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788458478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:53,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:53,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 20:24:53,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468571244] [2021-10-21 20:24:53,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:24:53,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:24:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:24:53,660 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:53,832 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-10-21 20:24:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:24:53,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 20:24:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:53,834 INFO L225 Difference]: With dead ends: 116 [2021-10-21 20:24:53,834 INFO L226 Difference]: Without dead ends: 106 [2021-10-21 20:24:53,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:24:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-21 20:24:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-10-21 20:24:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 102 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-10-21 20:24:53,855 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2021-10-21 20:24:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:53,855 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-10-21 20:24:53,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-10-21 20:24:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 20:24:53,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:53,858 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:53,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-21 20:24:54,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:54,074 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:54,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:54,075 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2021-10-21 20:24:54,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:54,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527639094] [2021-10-21 20:24:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:54,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:54,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:54,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234631308] [2021-10-21 20:24:54,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:24:54,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:54,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:54,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:54,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:24:54,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:24:54,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:54,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:24:54,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:54,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:54,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527639094] [2021-10-21 20:24:54,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:54,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234631308] [2021-10-21 20:24:54,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234631308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:54,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:54,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 20:24:54,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701339261] [2021-10-21 20:24:54,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:24:54,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:24:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:24:54,669 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:54,853 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-10-21 20:24:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:24:54,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-21 20:24:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:54,855 INFO L225 Difference]: With dead ends: 131 [2021-10-21 20:24:54,856 INFO L226 Difference]: Without dead ends: 127 [2021-10-21 20:24:54,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.3ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:24:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-21 20:24:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2021-10-21 20:24:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.201834862385321) internal successors, (131), 113 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-10-21 20:24:54,872 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2021-10-21 20:24:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:54,873 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-10-21 20:24:54,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-10-21 20:24:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 20:24:54,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:54,874 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:54,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:55,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 20:24:55,101 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:55,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:55,101 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2021-10-21 20:24:55,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:55,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139931114] [2021-10-21 20:24:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:55,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:55,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:55,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849029281] [2021-10-21 20:24:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:55,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:55,133 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:55,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 20:24:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:55,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 20:24:55,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:56,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:56,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139931114] [2021-10-21 20:24:56,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:56,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849029281] [2021-10-21 20:24:56,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849029281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:56,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:56,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:24:56,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062038686] [2021-10-21 20:24:56,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:24:56,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:24:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:24:56,178 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:56,476 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-10-21 20:24:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:24:56,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 20:24:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:56,478 INFO L225 Difference]: With dead ends: 142 [2021-10-21 20:24:56,478 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 20:24:56,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:24:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 20:24:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2021-10-21 20:24:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-10-21 20:24:56,495 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2021-10-21 20:24:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:56,496 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-10-21 20:24:56,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-10-21 20:24:56,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 20:24:56,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:56,497 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:56,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:56,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 20:24:56,721 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:56,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:56,721 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2021-10-21 20:24:56,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:56,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446931136] [2021-10-21 20:24:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:56,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:56,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:56,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122777370] [2021-10-21 20:24:56,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:24:56,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:56,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:56,737 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:56,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 20:24:57,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:24:57,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:57,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-21 20:24:57,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:57,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:57,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446931136] [2021-10-21 20:24:57,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:57,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122777370] [2021-10-21 20:24:57,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122777370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:57,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:57,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 20:24:57,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610204479] [2021-10-21 20:24:57,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:24:57,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:24:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:24:57,784 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:58,213 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2021-10-21 20:24:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:24:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 20:24:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:58,215 INFO L225 Difference]: With dead ends: 148 [2021-10-21 20:24:58,215 INFO L226 Difference]: Without dead ends: 146 [2021-10-21 20:24:58,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 260.7ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:24:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-21 20:24:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-10-21 20:24:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 117 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-10-21 20:24:58,233 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2021-10-21 20:24:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:58,234 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-10-21 20:24:58,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-10-21 20:24:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:24:58,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:58,235 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:58,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:58,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:58,443 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:58,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2021-10-21 20:24:58,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:58,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639301672] [2021-10-21 20:24:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:58,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:58,458 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:58,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524303372] [2021-10-21 20:24:58,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:24:58,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:58,460 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:58,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 20:24:58,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:24:58,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:24:58,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 20:24:58,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:24:59,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:24:59,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639301672] [2021-10-21 20:24:59,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:24:59,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524303372] [2021-10-21 20:24:59,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524303372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:24:59,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:24:59,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 20:24:59,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803725398] [2021-10-21 20:24:59,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:24:59,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:24:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:24:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:24:59,451 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:24:59,669 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-10-21 20:24:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:24:59,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-21 20:24:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:24:59,671 INFO L225 Difference]: With dead ends: 160 [2021-10-21 20:24:59,672 INFO L226 Difference]: Without dead ends: 148 [2021-10-21 20:24:59,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:24:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-21 20:24:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2021-10-21 20:24:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 125 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-10-21 20:24:59,690 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2021-10-21 20:24:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:24:59,690 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-10-21 20:24:59,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:24:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-10-21 20:24:59,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:24:59,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:24:59,692 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:24:59,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:24:59,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 20:24:59,917 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:24:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:24:59,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2021-10-21 20:24:59,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:24:59,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299662661] [2021-10-21 20:24:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:59,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:24:59,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:24:59,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191567689] [2021-10-21 20:24:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:59,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:59,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:59,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 20:25:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:00,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-21 20:25:00,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:01,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:01,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299662661] [2021-10-21 20:25:01,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:01,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191567689] [2021-10-21 20:25:01,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191567689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:01,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:01,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 20:25:01,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964072971] [2021-10-21 20:25:01,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:25:01,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:25:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:25:01,168 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:01,703 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2021-10-21 20:25:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:25:01,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-21 20:25:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:01,705 INFO L225 Difference]: With dead ends: 162 [2021-10-21 20:25:01,705 INFO L226 Difference]: Without dead ends: 148 [2021-10-21 20:25:01,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 205.5ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:25:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-21 20:25:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 119. [2021-10-21 20:25:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 118 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-10-21 20:25:01,723 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2021-10-21 20:25:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:01,723 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-10-21 20:25:01,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-10-21 20:25:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:25:01,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:01,725 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:01,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:01,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:01,945 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:01,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2021-10-21 20:25:01,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:01,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91525935] [2021-10-21 20:25:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:01,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:01,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:01,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642356593] [2021-10-21 20:25:01,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:25:01,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:01,968 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 20:25:02,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:25:02,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:02,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-21 20:25:02,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 20:25:03,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:03,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91525935] [2021-10-21 20:25:03,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:03,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642356593] [2021-10-21 20:25:03,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642356593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:03,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:03,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-21 20:25:03,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251414416] [2021-10-21 20:25:03,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:25:03,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:25:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:03,548 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:05,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:05,458 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2021-10-21 20:25:05,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:25:05,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 20:25:05,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:05,461 INFO L225 Difference]: With dead ends: 172 [2021-10-21 20:25:05,461 INFO L226 Difference]: Without dead ends: 162 [2021-10-21 20:25:05,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 856.2ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:25:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-21 20:25:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2021-10-21 20:25:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-10-21 20:25:05,487 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2021-10-21 20:25:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:05,488 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-10-21 20:25:05,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-10-21 20:25:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:25:05,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:05,489 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:05,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:05,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 20:25:05,702 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2021-10-21 20:25:05,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:05,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347642818] [2021-10-21 20:25:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:05,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:05,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:05,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29036103] [2021-10-21 20:25:05,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:25:05,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:05,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:05,719 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:05,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 20:25:06,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:25:06,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:06,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 20:25:06,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:06,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:06,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347642818] [2021-10-21 20:25:06,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:06,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29036103] [2021-10-21 20:25:06,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29036103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:06,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:06,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:25:06,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847159110] [2021-10-21 20:25:06,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:25:06,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:06,742 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:07,216 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-10-21 20:25:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:25:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 20:25:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:07,218 INFO L225 Difference]: With dead ends: 162 [2021-10-21 20:25:07,219 INFO L226 Difference]: Without dead ends: 158 [2021-10-21 20:25:07,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:25:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-21 20:25:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2021-10-21 20:25:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-10-21 20:25:07,249 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-10-21 20:25:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:07,249 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-10-21 20:25:07,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-10-21 20:25:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:25:07,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:07,251 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:07,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:07,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 20:25:07,477 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:07,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:07,477 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2021-10-21 20:25:07,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:07,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793028782] [2021-10-21 20:25:07,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:07,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:07,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:07,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684284421] [2021-10-21 20:25:07,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:25:07,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:07,493 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:07,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 20:25:08,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-21 20:25:08,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:08,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 20:25:08,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:09,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:09,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793028782] [2021-10-21 20:25:09,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:09,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684284421] [2021-10-21 20:25:09,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684284421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:09,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:09,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:25:09,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495869721] [2021-10-21 20:25:09,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:25:09,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:09,521 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:09,825 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-10-21 20:25:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:25:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 20:25:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:09,828 INFO L225 Difference]: With dead ends: 162 [2021-10-21 20:25:09,828 INFO L226 Difference]: Without dead ends: 152 [2021-10-21 20:25:09,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:25:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-21 20:25:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2021-10-21 20:25:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-10-21 20:25:09,857 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-10-21 20:25:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:09,858 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-10-21 20:25:09,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-10-21 20:25:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:25:09,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:09,859 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:09,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:10,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 20:25:10,069 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:10,070 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2021-10-21 20:25:10,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:10,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175966025] [2021-10-21 20:25:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:10,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:10,100 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:10,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765821939] [2021-10-21 20:25:10,117 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:25:10,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:10,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:10,127 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:10,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 20:25:10,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-21 20:25:10,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:10,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 20:25:10,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:11,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:11,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175966025] [2021-10-21 20:25:11,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:11,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765821939] [2021-10-21 20:25:11,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765821939] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:11,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:11,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:25:11,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423344150] [2021-10-21 20:25:11,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:25:11,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:11,176 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:11,501 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2021-10-21 20:25:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:25:11,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 20:25:11,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:11,504 INFO L225 Difference]: With dead ends: 170 [2021-10-21 20:25:11,504 INFO L226 Difference]: Without dead ends: 166 [2021-10-21 20:25:11,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:25:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-21 20:25:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-10-21 20:25:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1843971631205674) internal successors, (167), 145 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-10-21 20:25:11,533 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2021-10-21 20:25:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:11,534 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-10-21 20:25:11,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-10-21 20:25:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:25:11,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:11,535 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:11,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:11,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:11,749 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:11,749 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2021-10-21 20:25:11,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:11,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467305310] [2021-10-21 20:25:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:11,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:11,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:11,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135025826] [2021-10-21 20:25:11,772 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 20:25:11,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:11,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:11,775 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:11,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 20:25:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:12,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 20:25:12,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:12,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:12,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467305310] [2021-10-21 20:25:12,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:12,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135025826] [2021-10-21 20:25:12,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135025826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:12,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:12,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:25:12,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785557774] [2021-10-21 20:25:12,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:25:12,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:12,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:12,817 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:13,195 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-10-21 20:25:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:25:13,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 20:25:13,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:13,197 INFO L225 Difference]: With dead ends: 166 [2021-10-21 20:25:13,198 INFO L226 Difference]: Without dead ends: 156 [2021-10-21 20:25:13,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:25:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-21 20:25:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2021-10-21 20:25:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1879699248120301) internal successors, (158), 137 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2021-10-21 20:25:13,229 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2021-10-21 20:25:13,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:13,229 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2021-10-21 20:25:13,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2021-10-21 20:25:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:25:13,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:13,230 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:13,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:13,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:13,457 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:13,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:13,457 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2021-10-21 20:25:13,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:13,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917771943] [2021-10-21 20:25:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:13,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:13,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:13,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527510014] [2021-10-21 20:25:13,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:25:13,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:13,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:13,474 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:13,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-21 20:25:14,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:25:14,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:14,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 20:25:14,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:14,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:14,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917771943] [2021-10-21 20:25:14,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:14,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527510014] [2021-10-21 20:25:14,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527510014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:14,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:14,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:25:14,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006264421] [2021-10-21 20:25:14,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:25:14,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:14,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:14,463 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:14,799 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-10-21 20:25:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:25:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 20:25:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:14,801 INFO L225 Difference]: With dead ends: 166 [2021-10-21 20:25:14,801 INFO L226 Difference]: Without dead ends: 162 [2021-10-21 20:25:14,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:25:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-21 20:25:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2021-10-21 20:25:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 141 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2021-10-21 20:25:14,825 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2021-10-21 20:25:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:14,825 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2021-10-21 20:25:14,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2021-10-21 20:25:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 20:25:14,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:14,826 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:14,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:15,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-21 20:25:15,049 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2021-10-21 20:25:15,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:15,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366997508] [2021-10-21 20:25:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:15,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:15,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:15,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613526342] [2021-10-21 20:25:15,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:25:15,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:15,077 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:15,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 20:25:15,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:25:15,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:15,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-21 20:25:15,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:16,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:16,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366997508] [2021-10-21 20:25:16,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:16,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613526342] [2021-10-21 20:25:16,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613526342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:16,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:16,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 20:25:16,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900017863] [2021-10-21 20:25:16,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:25:16,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:25:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:25:16,673 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:17,573 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2021-10-21 20:25:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:25:17,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-21 20:25:17,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:17,576 INFO L225 Difference]: With dead ends: 177 [2021-10-21 20:25:17,577 INFO L226 Difference]: Without dead ends: 175 [2021-10-21 20:25:17,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 272.4ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-21 20:25:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2021-10-21 20:25:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1843971631205674) internal successors, (167), 145 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-10-21 20:25:17,608 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 39 [2021-10-21 20:25:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:17,609 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-10-21 20:25:17,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-10-21 20:25:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 20:25:17,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:17,610 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:17,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:17,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:17,837 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2085182066, now seen corresponding path program 3 times [2021-10-21 20:25:17,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:17,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440802694] [2021-10-21 20:25:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:17,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:17,863 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:17,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957502567] [2021-10-21 20:25:17,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:25:17,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:17,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:17,865 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:17,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-21 20:25:18,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 20:25:18,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:18,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 20:25:18,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-21 20:25:18,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:18,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440802694] [2021-10-21 20:25:18,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:18,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957502567] [2021-10-21 20:25:18,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957502567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:18,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:18,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:25:18,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287829927] [2021-10-21 20:25:18,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:25:18,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:25:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:25:18,821 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:19,793 INFO L93 Difference]: Finished difference Result 146 states and 167 transitions. [2021-10-21 20:25:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:25:19,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-21 20:25:19,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:19,808 INFO L225 Difference]: With dead ends: 146 [2021-10-21 20:25:19,808 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 20:25:19,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:25:19,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 20:25:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 91. [2021-10-21 20:25:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.1123595505617978) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-10-21 20:25:19,831 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 39 [2021-10-21 20:25:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:19,832 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-10-21 20:25:19,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:19,832 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-10-21 20:25:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:19,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:19,833 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:19,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:20,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:20,049 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1388479860, now seen corresponding path program 9 times [2021-10-21 20:25:20,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:20,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743541183] [2021-10-21 20:25:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:20,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:20,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:20,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359732871] [2021-10-21 20:25:20,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:25:20,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:20,067 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:20,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 20:25:20,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:25:20,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:20,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:25:20,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-21 20:25:21,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:21,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743541183] [2021-10-21 20:25:21,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:21,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359732871] [2021-10-21 20:25:21,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359732871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:21,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:21,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 20:25:21,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455609154] [2021-10-21 20:25:21,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:25:21,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:21,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:25:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:25:21,365 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:22,555 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2021-10-21 20:25:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:25:22,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:25:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:22,557 INFO L225 Difference]: With dead ends: 134 [2021-10-21 20:25:22,557 INFO L226 Difference]: Without dead ends: 124 [2021-10-21 20:25:22,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 365.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:25:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-21 20:25:22,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 99. [2021-10-21 20:25:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.1134020618556701) internal successors, (108), 98 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-10-21 20:25:22,584 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 45 [2021-10-21 20:25:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:22,584 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-10-21 20:25:22,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-10-21 20:25:22,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:22,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:22,586 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:22,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:22,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-21 20:25:22,803 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:22,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1388539442, now seen corresponding path program 10 times [2021-10-21 20:25:22,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:22,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119606258] [2021-10-21 20:25:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:22,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:22,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:22,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49815331] [2021-10-21 20:25:22,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:25:22,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:22,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:22,817 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:22,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-21 20:25:23,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:25:23,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:23,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:25:23,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:24,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:24,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119606258] [2021-10-21 20:25:24,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:24,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49815331] [2021-10-21 20:25:24,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49815331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:24,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:24,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 20:25:24,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800912220] [2021-10-21 20:25:24,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:25:24,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:25:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:25:24,229 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:24,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:24,579 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2021-10-21 20:25:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:25:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:25:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:24,581 INFO L225 Difference]: With dead ends: 133 [2021-10-21 20:25:24,581 INFO L226 Difference]: Without dead ends: 123 [2021-10-21 20:25:24,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-21 20:25:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 107. [2021-10-21 20:25:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 106 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-10-21 20:25:24,621 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 45 [2021-10-21 20:25:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:24,621 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-10-21 20:25:24,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-10-21 20:25:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:24,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:24,624 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:24,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:24,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-21 20:25:24,845 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash -312665972, now seen corresponding path program 11 times [2021-10-21 20:25:24,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:24,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023491690] [2021-10-21 20:25:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:24,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:24,868 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:24,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674089208] [2021-10-21 20:25:24,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:25:24,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:24,870 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:24,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 20:25:26,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-21 20:25:26,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:26,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:25:26,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:26,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:26,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023491690] [2021-10-21 20:25:26,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:26,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674089208] [2021-10-21 20:25:26,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674089208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:26,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:26,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 20:25:26,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109494739] [2021-10-21 20:25:26,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:25:26,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:25:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:25:26,797 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:27,131 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-10-21 20:25:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:25:27,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:25:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:27,133 INFO L225 Difference]: With dead ends: 141 [2021-10-21 20:25:27,133 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 20:25:27,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 20:25:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-10-21 20:25:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-10-21 20:25:27,159 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-10-21 20:25:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:27,160 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-10-21 20:25:27,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-10-21 20:25:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:27,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:27,161 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:27,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:27,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-21 20:25:27,369 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:27,370 INFO L82 PathProgramCache]: Analyzing trace with hash -312725554, now seen corresponding path program 12 times [2021-10-21 20:25:27,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:27,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153773214] [2021-10-21 20:25:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:27,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:27,382 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:27,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216676642] [2021-10-21 20:25:27,383 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:25:27,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:27,384 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:27,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-21 20:25:28,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-21 20:25:28,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:28,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:25:28,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:28,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:28,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153773214] [2021-10-21 20:25:28,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:28,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216676642] [2021-10-21 20:25:28,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216676642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:28,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:28,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 20:25:28,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539711054] [2021-10-21 20:25:28,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:25:28,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:25:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:25:28,801 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:29,120 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-10-21 20:25:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:25:29,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:25:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:29,122 INFO L225 Difference]: With dead ends: 141 [2021-10-21 20:25:29,122 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 20:25:29,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 20:25:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-10-21 20:25:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-10-21 20:25:29,145 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-10-21 20:25:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:29,146 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-10-21 20:25:29,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-10-21 20:25:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:29,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:29,147 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:29,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-21 20:25:29,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-21 20:25:29,361 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:29,361 INFO L82 PathProgramCache]: Analyzing trace with hash -570831410, now seen corresponding path program 13 times [2021-10-21 20:25:29,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:29,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772353892] [2021-10-21 20:25:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:29,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:29,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:29,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556749119] [2021-10-21 20:25:29,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 20:25:29,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:29,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:29,386 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:29,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-21 20:25:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:30,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:25:30,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:30,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:30,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772353892] [2021-10-21 20:25:30,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:30,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556749119] [2021-10-21 20:25:30,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556749119] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:30,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:30,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 20:25:30,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662555317] [2021-10-21 20:25:30,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:25:30,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:25:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:25:30,870 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:31,372 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-10-21 20:25:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:25:31,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:25:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:31,373 INFO L225 Difference]: With dead ends: 141 [2021-10-21 20:25:31,374 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 20:25:31,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 20:25:31,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-10-21 20:25:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-10-21 20:25:31,410 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-10-21 20:25:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:31,411 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-10-21 20:25:31,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-10-21 20:25:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:31,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:31,412 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:31,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:31,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-21 20:25:31,631 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:31,631 INFO L82 PathProgramCache]: Analyzing trace with hash -570890992, now seen corresponding path program 14 times [2021-10-21 20:25:31,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:31,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695288317] [2021-10-21 20:25:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:31,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:31,657 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:31,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763756467] [2021-10-21 20:25:31,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:25:31,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:31,660 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:31,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-21 20:25:32,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:25:32,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:32,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:25:32,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:25:33,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:33,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695288317] [2021-10-21 20:25:33,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:33,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763756467] [2021-10-21 20:25:33,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763756467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:33,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:33,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 20:25:33,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839465071] [2021-10-21 20:25:33,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:25:33,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:25:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:25:33,123 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:33,372 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-10-21 20:25:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:25:33,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:25:33,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:33,378 INFO L225 Difference]: With dead ends: 141 [2021-10-21 20:25:33,378 INFO L226 Difference]: Without dead ends: 131 [2021-10-21 20:25:33,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:25:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-21 20:25:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-10-21 20:25:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-10-21 20:25:33,406 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-10-21 20:25:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:33,406 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-10-21 20:25:33,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:33,407 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-10-21 20:25:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 20:25:33,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:33,408 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:33,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:33,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:33,622 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 20:25:33,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:33,622 INFO L82 PathProgramCache]: Analyzing trace with hash -620841332, now seen corresponding path program 15 times [2021-10-21 20:25:33,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:33,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583212626] [2021-10-21 20:25:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:33,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:33,652 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:25:33,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376077453] [2021-10-21 20:25:33,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:25:33,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:33,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:33,654 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:25:33,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-21 20:25:34,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:25:34,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:25:34,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-21 20:25:34,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:25:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 20:25:35,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:35,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583212626] [2021-10-21 20:25:35,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:25:35,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376077453] [2021-10-21 20:25:35,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376077453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:25:35,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:25:35,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 20:25:35,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977135988] [2021-10-21 20:25:35,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:25:35,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:35,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:25:35,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:25:35,131 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:49,037 INFO L93 Difference]: Finished difference Result 152 states and 168 transitions. [2021-10-21 20:25:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:25:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-21 20:25:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:25:49,038 INFO L225 Difference]: With dead ends: 152 [2021-10-21 20:25:49,038 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:25:49,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 509.1ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:25:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:25:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:25:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:25:49,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-10-21 20:25:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:25:49,040 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:25:49,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:25:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:25:49,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:25:49,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:49,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:49,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:49,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:49,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:49,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:49,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:25:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-21 20:25:49,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:25:49,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:25:49,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:49,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:49,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:49,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:50,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:50,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:50,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:50,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:25:50,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:12,152 WARN L207 SmtUtils]: Spent 11.82 s on a formula simplification. DAG size of input: 200 DAG size of output: 33 [2021-10-21 20:26:26,863 WARN L207 SmtUtils]: Spent 11.96 s on a formula simplification. DAG size of input: 182 DAG size of output: 43 [2021-10-21 20:26:35,618 WARN L207 SmtUtils]: Spent 8.75 s on a formula simplification. DAG size of input: 213 DAG size of output: 33 [2021-10-21 20:26:35,621 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2021-10-21 20:26:35,621 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:26:35,622 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:26:35,622 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~x~0 20) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 20) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-21 20:26:35,622 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:26:35,622 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~x~0 20) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 20) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-21 20:26:35,622 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:26:35,622 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 40 41) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and (= (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (+ .cse0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) .cse1)) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~x~0 20) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 20) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ .cse0 .cse1)))) [2021-10-21 20:26:35,622 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:26:35,623 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~x~0 20) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 20) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-10-21 20:26:35,623 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:26:35,623 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:26:35,623 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:26:35,624 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~p~0 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 20)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (<= ULTIMATE.start_main_~y~0 20)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and .cse0 .cse6 .cse1 .cse2 .cse7 .cse3 .cse8 .cse4 .cse5 .cse9) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse6 .cse1 .cse2 .cse7 .cse3 (= ULTIMATE.start_main_~r~0 0) .cse8 .cse4 .cse9))) [2021-10-21 20:26:35,624 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:26:35,624 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:26:35,624 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 20)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 20)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~q~0 0) .cse3 (= ULTIMATE.start_main_~s~0 1) .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-21 20:26:35,624 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:26:35,624 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-10-21 20:26:35,624 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:26:35,624 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:26:35,624 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:26:35,625 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:26:35,626 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:26:35,626 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:26:35,626 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:26:35,626 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:26:35,626 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:26:35,626 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-21 20:26:35,627 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-21 20:26:35,627 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-21 20:26:35,627 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-21 20:26:35,627 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:26:35,627 INFO L860 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-10-21 20:26:35,628 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:26:35,628 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-10-21 20:26:35,628 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 20)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 20)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~q~0 0) .cse3 (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-21 20:26:35,633 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:26:35,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:26:35 BoogieIcfgContainer [2021-10-21 20:26:35,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:26:35,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:26:35,685 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:26:35,685 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:26:35,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:24:45" (3/4) ... [2021-10-21 20:26:35,689 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:26:35,704 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-21 20:26:35,704 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:26:35,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:26:35,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:26:35,763 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:26:35,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:26:35,765 INFO L168 Benchmark]: Toolchain (without parser) took 111313.41 ms. Allocated memory was 102.8 MB in the beginning and 243.3 MB in the end (delta: 140.5 MB). Free memory was 71.0 MB in the beginning and 161.1 MB in the end (delta: -90.1 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:35,765 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:35,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.46 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 70.8 MB in the beginning and 112.9 MB in the end (delta: -42.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:35,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.65 ms. Allocated memory is still 138.4 MB. Free memory was 112.9 MB in the beginning and 110.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:35,767 INFO L168 Benchmark]: Boogie Preprocessor took 32.89 ms. Allocated memory is still 138.4 MB. Free memory was 110.9 MB in the beginning and 109.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:35,768 INFO L168 Benchmark]: RCFGBuilder took 435.13 ms. Allocated memory is still 138.4 MB. Free memory was 109.6 MB in the beginning and 98.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:35,768 INFO L168 Benchmark]: TraceAbstraction took 110382.19 ms. Allocated memory was 138.4 MB in the beginning and 243.3 MB in the end (delta: 104.9 MB). Free memory was 98.2 MB in the beginning and 164.3 MB in the end (delta: -66.0 MB). Peak memory consumption was 188.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:35,768 INFO L168 Benchmark]: Witness Printer took 78.39 ms. Allocated memory is still 243.3 MB. Free memory was 164.3 MB in the beginning and 161.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:35,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.46 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 70.8 MB in the beginning and 112.9 MB in the end (delta: -42.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.65 ms. Allocated memory is still 138.4 MB. Free memory was 112.9 MB in the beginning and 110.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.89 ms. Allocated memory is still 138.4 MB. Free memory was 110.9 MB in the beginning and 109.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 435.13 ms. Allocated memory is still 138.4 MB. Free memory was 109.6 MB in the beginning and 98.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 110382.19 ms. Allocated memory was 138.4 MB in the beginning and 243.3 MB in the end (delta: 104.9 MB). Free memory was 98.2 MB in the beginning and 164.3 MB in the end (delta: -66.0 MB). Peak memory consumption was 188.7 MB. Max. memory is 16.1 GB. * Witness Printer took 78.39 ms. Allocated memory is still 243.3 MB. Free memory was 164.3 MB in the beginning and 161.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 110257.1ms, OverallIterations: 30, TraceHistogramMax: 5, EmptinessCheckTime: 58.9ms, AutomataDifference: 26025.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 46368.5ms, InitialAbstractionConstructionTime: 27.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1027 SDtfs, 1299 SDslu, 3190 SDs, 0 SdLazy, 4202 SolverSat, 394 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 21137.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1046 GetRequests, 777 SyntacticMatches, 1 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4852.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, InterpolantAutomatonStates: 268, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 669.3ms AutomataMinimizationTime, 30 MinimizatonAttempts, 493 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 116 NumberOfFragments, 462 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1686392 FormulaSimplificationTreeSizeReduction, 1890.6ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 507842 FormulaSimplificationTreeSizeReductionInter, 44467.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 258.2ms SsaConstructionTime, 2325.2ms SatisfiabilityAnalysisTime, 15001.2ms InterpolantComputationTime, 970 NumberOfCodeBlocks, 908 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 940 ConstructedInterpolants, 2 QuantifiedInterpolants, 10972 SizeOfPredicates, 235 NumberOfNonLiveVariables, 3661 ConjunctsInSsa, 720 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 129/752 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && x <= 20) && 1 <= y) && y <= 20) && 1 <= x) && b == a) && b == r * y + p * x) || (((((((cond == 1 && x <= 20) && 1 <= y) && q == 0) && y <= 20) && s == 1) && 1 <= x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && x <= 20) && 1 <= y) && y <= 20) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && x <= 20) && 1 <= y) && y <= 20) && 1 <= x) && a == r * y + p * x) || ((((((((((cond == 1 && p == 1) && x <= 20) && 1 <= y) && q == 0) && y <= 20) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((b + a == r * y + s * y + q * x + p * x && cond == 1) && q * r + 1 == p * s) && 1 == cond) && x <= 20) && 1 <= y) && y <= 20) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && x <= 20) && 1 <= y) && y <= 20) && 1 <= x) && b == a) && b == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && x <= 20) && 1 <= y) && y <= 20) && 1 <= x) && b == a) && b == r * y + p * x) || (((((((((cond == 1 && p == 1) && x <= 20) && 1 <= y) && q == 0) && y <= 20) && s == 1) && 1 <= x) && b == a) && b == y)) || ((((((((((cond == 1 && a == x) && p == 1) && x <= 20) && 1 <= y) && q == 0) && y <= 20) && r == 0) && s == 1) && 1 <= x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && x <= 20) && 1 <= y) && y <= 20) && 1 <= x) && a == r * y + p * x RESULT: Ultimate proved your program to be correct! [2021-10-21 20:26:35,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c644844-402a-4604-80c8-93016f7289d6/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...